There is a misunderstanding here on the difference between effective and marginal tax rates. Marginal tax rates are what you pay and in Ireland for a single person it's 40% on taxable income above EUR 33,800, and 20% on income below that threshold. That is the figure on which you pay tax, i.e. 40% on taxable income above 33,800 and everyone paid above this threshold pays tax that at this rate.
The 'effective' tax rate is just a makey-up number, of dividing your total income tax payments by your total income. Nobody pays tax at this rate. It ignores the absolute amount of tax you pay and also that taxable income can be reduced by allowances, etc. For example, Warren Buffet probably has a lower effective tax rate than I have, but that doesn't mean that Buffet is better off than I am. He pays much more tax. Similarly, if you are on a seemingly 'low' effective tax rate it doesn't mean you do not have a high tax liability and you do have a personal tax obligation at 40%.
Marginal tax rates are ludicrously high in Ireland relative to the rest of the EU. If you look at KPMG's interactive tax calculator https://home.kpmg.com/xx/en/home/services/tax/tax-tools-and-resources/tax-rates-online.html you will see that marginal tax rates in Ireland have increased from 41% in 2008 to 48% in 2011 and have remained at this figure. (The KPMG figure includes USC.) This is grossly higher than the EU average that ranged from 37.56% in 2008 to 39.96% in 2016. The KPMG tables do not show the income threshold at which the tax marginal rate kicks-in but in Germany it's 254,447 EUR; 150,000 GBP in the UK; 66,422 EUR for NL (and 38,080 EUR in BE (but you can claim a lot against tax in Belgium)).
The 'effective' tax rate is just a makey-up number, of dividing your total income tax payments by your total income. Nobody pays tax at this rate. It ignores the absolute amount of tax you pay and also that taxable income can be reduced by allowances, etc. For example, Warren Buffet probably has a lower effective tax rate than I have, but that doesn't mean that Buffet is better off than I am. He pays much more tax. Similarly, if you are on a seemingly 'low' effective tax rate it doesn't mean you do not have a high tax liability and you do have a personal tax obligation at 40%.
Marginal tax rates are ludicrously high in Ireland relative to the rest of the EU. If you look at KPMG's interactive tax calculator https://home.kpmg.com/xx/en/home/services/tax/tax-tools-and-resources/tax-rates-online.html you will see that marginal tax rates in Ireland have increased from 41% in 2008 to 48% in 2011 and have remained at this figure. (The KPMG figure includes USC.) This is grossly higher than the EU average that ranged from 37.56% in 2008 to 39.96% in 2016. The KPMG tables do not show the income threshold at which the tax marginal rate kicks-in but in Germany it's 254,447 EUR; 150,000 GBP in the UK; 66,422 EUR for NL (and 38,080 EUR in BE (but you can claim a lot against tax in Belgium)).
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